RFID (radio frequency identification) reader system
A technology of parts and antennas, applied in the direction of instruments, induction record carriers, computer components, etc., can solve the problems of increased manufacturing costs and widened antenna installation space
Active Publication Date: 2015-05-20
VIACN WUXI INFORMATION TECH CO LTD
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- Description
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- Application Information
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Problems solved by technology
When the transmitting antenna and receiving antenna of the RFID Reader system are used independently, there are disadvantages such as widening the installation space of the antenna and increasing the manufacturing cost
Method used
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Embodiment 1
[0013] see figure 1 , in the embodiment of the present invention, the RFID Reader system includes a bandpass filter 1, a coupler 2, a modem 3, a demodulation part 4, a low noise amplifier 5, a graphics card detector 6, an attenuator 7, an antenna 8, and a signal processing part 9. The antenna 8 is connected to the coupler 2 through the band-pass filter 1, and the coupler 2 is connected to the demodulation part 4 through the low-noise amplifier 5, the graphics card detector 6, and the attenuator 7. The demodulation part 4 is also connected to the signal processing part 9, and the signal The processing part 9 is respectively connected to the RS-232 interface and the modem 3 , and the modem 3 is connected to the coupler 2 through the driver 10 . The demodulation part 4 is provided with automatic calibration, and the demodulation part 4 is connected with a DC power supply. An oscillator is provided inside the modem 3 .
[0014] A coupler 2 is connected to the output end of the t...
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The invention discloses an RFID (radio frequency identification) reader system, which comprises a band pass filter, a coupler, a modem, a demodulation part, a low-noise amplifier, a video card detector, an attenuator, an antenna and a signal processing part, wherein label receiving signals received through the antenna are firstly input into the band pass filter, after being filtered, the signals are induced on the coupler and are then input onto the low-noise amplifier to be amplified by the low-noise amplifier, in addition, the signals are input onto the demodulation part and are input into the modem through the signal processing part, output signals of the modem are input to the coupler through a driver, and the output signals of the modem are sent out through the antenna from a sending part by the coupler. The RFID reader system has the advantages that only one receiving and sending antenna is used, in addition, a signal separation element capable of separating receiving and sending signals is added, the data receiving and sending are realized in a non-contact mode through labels, and the RFID reader system is suitable for being used for data collection in metal environment of semiconductor engineering equipment.
Description
technical field [0001] The invention relates to the field of RFID, in particular to an RFID Reader system that greatly improves the receiving sensitivity of the RFID Reader by improving the structure of the transceiver end used to identify RFID HF metal tag information. Background technique [0002] RFID (RFID: Radio Frequency IDendification) technology for automatically identifying RFID tags is widely used. This technology is a system that uses a certain frequency band to send and receive various data wirelessly. Magnetic cards or barcodes are exposed on the surface and are easily damaged or deformed, and the recognition rate will gradually decrease over time. According to one aspect, an RFID Reader includes an RFID tag and a receiving antenna for reading RFID information using a wireless signal transmitted from the RFID tag. According to another form of RFID Reader, it contains an RFID tag, activates the antenna to recognize the antenna part of the RFID tag (including th...
Claims
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Inventor 许进俊
Owner VIACN WUXI INFORMATION TECH CO LTD